Adding and Subtracting Integers

Vocab

100

The distance of a number from zero

Absolute value

200

The set of whole numbers and their opposites.

Integers

300

The same distance from zero as the original number just on the other side.

Opposites

400

|-6| 

The absolute value of -6 = 6

500

Any number plus it's opposite equals zero

Additive Inverse

Adding Integers

100

-5 + 9

4

200

-12 + 5

-7

300

-16 + (-17)

-33

400

How do you find the sum of numbers with different signs

Subtract and take the sign of the bigger number

500

-16+18+-17

-15

Subtracting Integers

100

-4 - 6

-10

200

4 - 11

-7

300

15 - (-7)

22

400

-27 - (-3)

-24

500

-10 - 11 - (-3)

-18

Mix

100

-2 - 3

-5

200

-10 + 30

20

300

21 - (+5)

16

400

Subtracting a negative is the same thing as...

Adding a positive

500

-10 + (-2) - 5

-17